It was back to school for Gwen Stefani's five-year-old son Zuma Tuesday (September 10)—or should we say “Hollaback to School”? (OK, we shouldn’t.) The 43-year-old mom was also accompanying another potential student—she’s reportedly pregnant.

An InTouch magazine source says, "She's just trying to focus on resting right now. She wants to make sure that all is well with the baby.”